SLES 16 ships no ISC dhclient and nothing provides dhcp-client, so the
image could not be built from SLES media at all. Leap carries dhcpcd
too, so one client covers both. el10 made the same move when RHEL
dropped dhclient.
Ported from suse15-diskless, with the differences 16 forces:
- dracut symlinks /lib/dracut/hooks to /var/lib/dracut/hooks, so a hook
shipped at the old path replaces the symlink with a directory
- there is no netconfig or /etc/sysconfig/network to hand the running
address to, so the initramfs writes a NetworkManager keyfile instead.
Without it NetworkManager claims the interface on its own terms and the
tethered root filesystem goes away with the old address, and confignet
never gets the chance to refine anything
- the discovery loop retries without a delay, so a link that takes a
moment to come up can exhaust all 30 tries before the first packet can
go anywhere. Keep asking, as the el9 hook already does
Markus Hilger